Hermetically sealed double pane windows



Nov. 29, 1955 R. R. CAMERON 2,724,873

HERMETICALLY SEALED DOUBLE PANE WINDOWS Filed April 19, 1954 Fig. 3

INVENTOR. Fig 8 Roberf R. Cameron ATTORNEY United States PatentHERIVIETICALLY SEALED DOUBLE PANE WINDOWS Robert R. Cameron, Denver,Colo.

Application April 19, 1954, Serial No. 423,942

1 Claim. (Cl. 20-565) This invention relates to a double-pane window andhas for its principal object the provision of simple and highlyefficient extruded metal members from which a highly efficientdouble-pane sash can be quickly and easily assembled, and which willprovide a sash in which the space between the two glass panes will behermetically sealed.

Another object of the invention is to provide a double glass panepackage assembly which will enable the two glass panes to be furnishedas a complete sealed assembled unit which may be installed in a metalsash without requiring any additional time or labor over theinstallation of a single pane and without disturbing the seal betweenthe two panes.

Other objects and advantages reside, in the detail construction of theinvention, which is designed for simplicity, economy and efficiency.These will become more apparent from the following description.

in the following detailed description of the invention, reference is hadto the accompanying drawing which forms a part hereof. Like numeralsrefer to like parts in all views of the drawing and throughout thedescription.

In the drawing:

Fig. 1 is a fragmentary cross-section through an installed double-panewindow embodying the improvements of this invention;

Fig. 2 is a perspective view illustrating a type of metal extrusion usedfor forming the window frame for the improved sash;

Fig. 3 is a similar perspective view illustrating a type of anchoremployed for anchoring the frame in the wall masonry;

Fig. 4 is a similar perspective view illustrating a type of metalextrusion employed for forming the improved sash;

Fig. 5 is a perspective view illustrating a pane separator employed inthe improved sash;

Fig. 6 is a similar perspective view illustrating a paneretainingmolding employed on the sash;

Fig. 7 is a similar perspective view illustrating a resilientWeatherstrip employed on the improved sash; and

Fig. 8 is a similar perspective view illustrating a resilient doublepane retaining and sealing band employed in the invention.

In Fig. 1, sections of a conventional wall at each side of a windowopening are indicated at 10 and the window sill at 11.

The frame of the improved window is formed from an extruded framemember, as illustrated in Fig. 2, having an outer wall flange 12, aninner wall flange 13, and a medial frame portion 14, producing asomewhat Z-shaped cross-section. Two parallel, hook-like retainingflanges extend along the opposite sides of the frame portion 14 inspaced relation thereto. The frame members of Fig. 2 are welded togetherto form the window frame, which is embedded in the masonry walls 10.

To assist in retaining the frame in the wall, a plurality of T-shapedanchor members 16 are provided, as illustrated in Fig. 3. These anchormembers are placed against the sides of the frame portion 14 and turnedto position their T-shaped heads between and beneath the retainingflanges 15 so that the anchor members will project from the frame atspaced positions for embedment in the walls 10. The anchor members 16are provided with nail holes 17 through which they may be nailed totemporary supporting braces during the building of the walls. The holesalso serve to more firmly anchor the anchor members in the concrete ormortar of the walls.

The sash of the improved window is formed from an extruded sash member,as illustrated in Fig. 4, comprising a sash portion 18 and a sash flange19 positioned at right angles toeach other to form a substantiallyL-shaped cross-section. A screw-retaining strip 20 is formed on the sashportion 18 in parallel spaced relation thereto to form a longitudinallyextending, continuous screwreceiving channel 21.

Two dovetailed ridges 22 are formed along the flange 19 adjacent theedge of the latter and in spaced-apart relation to form a dovetailedWeatherstrip groove 23. A fixed hook-shaped molding strip 25 is formedon the sash member and projects from the intersection of the sashportion 18 and the flange 19 substantially in the plane of the flange19. A hollow, resilient chord-shaped Weatherstrip 24, as shown in Fig.7, is provided for installation in the'dovetailed groove 23 of the sashframe, as shown in Fig. l. The sash members of Fig. 4 are weldedtogether to form a sash to fit the frame formed by the members of Fig. 2such as shown in Fig. 1. The sash carries two glass panes 27 and 28 andis hinged to the frame by any suitable hinge, such as indicated at 26.

The glass panes 27 and 28 are completely surrounded by a resilient,elastic enclosing and sealing band 29, as illustrated in Fig. 8. Theband 29 is extruded from any suitable resilient material, such asrubber, neoprene, flexible plastic, or the like, and is formed with twopairs of hollow, cylindrical beads 30 and 31 extending longitudinally ofone face of the band.

The beads are supported in spaced relation to the plane of the band 29on continuous, flaring, resilient leg strips 32. The two pairs of beads30 and 31 are designed to resiliently engage the opposite faces of theperipheral edges of the two panes 27 and 28, and when in place are heldin sealed relation to the panes by the inherent elasticity of the legstrips 32. The pair of beads are maintained in fixed, spaced relationwith each other by means of an elongated rigid spacer strip 33,illustrated in detail in Fig. 5. The side edges of the spacer strip 33are flared and curvated to form a bead-receiving groove 34 along eachside edge of the strip.

When assembled, the band 29 extends continuously around the four sidesof the two panes 27 and 28 and is stretched to flex it around thecorners of the panes in sealing relation thereto. The two extremities ofthe surrounding band are vulcanized or cemented together to form acontinuous, endless, hermetically sealing strip. The spacer strips 33rigidly retain the pairs of beads and the panes 27 and 28 in accuratespaced relation. The two panes 27 and 28 with the spacer strips 33 andthe surrounding band 29 form a complete integral unit which can beremoved from or installed in the sash as a unitary pane assembly.

The pane assembly is retained in place in the sash by means of aremovable molding strip 35, illustrated in Fig. 6, formed with acontinuous arcuate bead channel 36 along one of its edges, andperforated at spaced intervals, as shown at 37, to receive suitableself-threading retaining screws 38.

The pane assembly is installed in the sash frame by sliding the twopanes and their surrounding sealing band 29, with the enclosed spacerstrips 33, into the enclosure of the sash portions 18 of the sash. Themolding strip 35 is then placed in position and secured by means of theself-threading metal screws 38 which will extend through theperforations 37 into the screw-receiving channel 21 and form retainingthreads in the walls of the latter. As the molding strip is brought toits final position, it will force the outer bead of the pair of beads 31against the pane 28, the pane 28. against the inner bead of the pair. ofbeads 31, the inner bead 31 against the spacer strip 33, the spacerstrip against the inner bead of the pair of beads 30, the inner bead ofthe pair of beads 30 against the pane 27, and the pane 27 against theouter bead of the pair of beads 30, and the outer bead of the pair ofbeads 30 against and into the fixed molding strip 25 to provide ahermetically sealed enclosure between the two panes and to securely andresiliently retain the panes in place.

A suitable lock shaft 39 extends through the inner wall flange 13 of thewindow frame. The lock shaft 39 is provided with a locking cam 40 at itsinner extremity which can be turned to engage the molding strip 35 bymeans of a suitable handle 41 to lock the sash frame closed.

It will be noted that when locked closed, a double seal is providedaround the sash frame: first, a contact seal between the molding strip35 and the inner flange 13; and a second air-tight seal between theresilient Weatherstrip 24 and the inner edge or corner of the outer wallflange 12.

It is desired to call attention to the fact that there is a very smallthickness of metal to conduct heat through the window frame and throughthe sash frame since the frame portions 14 and the sash portions 18 arerelatively thin. Thus, condensation on the metal portions is materiallyreduced.

While a specific form of the improvement has been dethat the same may bevaried, within the scope of the appended claim, without departing fromthe spirit of the invention.

Having thus described the invention, what is claimed and desired securedby Letters Patent is:

A double pane window sash comprising: a rectangular rigid frame; a fixedarcuate molding strip extending inwardly from and about one face of saidframe; a pair of similar glass panes; a resilient band completelysurrounding said pair of panes; two pairs of longitudinally extending,spaced outer and inner resilient beads formed on said band, each pair ofbeads engaging the outer and inner edges of one of said panes, said bandbeing positioned within said frame with the outer bead of one of saidpairs bearing against said fixed molding strip; a spacing strippositioned between the inner beads of the two pairs of beads about theperipheries of said panes, said spacing strip having a bead-receivinggroove along each of its side edges in which the inner beads arereceived; a removable molding strip having a bead-receiving grooveengaging the outer bead of the other pair of beads; and means fordrawing said removable molding strip toward the opposite side of saidframe so that said latter strip will compress all of said beads againsttheir respective panes to provide a hermetic seal thereto.

References Cited in the file of this patent UNITED STATES PATENTS1,024,113 Bennett Apr. 23, 1912 2,525,717 Ottenheimer Oct. 10, 19502,591,780 Cameron Apr. 8, 1952 2,633,946 Huizenga Apr. 7, 1953

